Brush



FIG. 1 is a front perspective view of a brush showing my new design with a cover to be cleaned shown above it, the cover being shown in broken lines for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is is a rear view thereof;

FIG. 3 is a side view thereof, the opposite side being identical thereto;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof. 

The ornamental design for a brush, as shown and described. 